# method that takes a block and
# might execute it.
#
# Good to use when users are expecting
# some some sort of output but you want to
# keep them on their toes-- stupid users.
def maybe(&block)
  if(rand(2) == 0)
    block.call
  end
end

#usage
maybe do
  puts "this /might/ get executed"
  # do_something
end

maybe do
  puts "this /might/ also get executed"
  # do_something else
  maybe do
    puts "You can also have nexted levels of possible execution... possibly."
  end
end

list = [1,2,3,4,5,6,7, 10]


#print some/none/all of the numbers in list
list.each do |elem| maybe do
    #you can even curry maybe into other blocks
    puts elem.to_s
  end
end